A steam locomotive is a type of railway locomotive that produces its pulling power through a steam engine.These locomotives are fueled by burning combustible material usually coal, wood, or oil to produce steam in a boiler.The steam moves reciprocating pistons which are mechanically connected to the locomotive’s main wheels drivers . .

The steam generator or boiler is an integral component of a steam engine when considered as a prime mover.However it needs be treated separately, as to some extent a variety of generator types can be combined with a variety of engine units..

Steam turbine rotors are susceptible to bending during some operational evolutions, which can lead to excessive vibration and ultimately failure. Rotor bending that results in premature failure of steam turbine blades and other internal components is one of the most serious problems experienced in .